Once, I let my roommate borrow my '87 IROC for the evening. In the morning we got up to go to work and went outside where he street-parked the car. We looked around and didn't see it. We thought maybe he forgot that he parked around the side, so we took a stroll to the corner... no car. I didn't have insurance.
I proceeded directly inside and called the cops and filed a police report. Four months later I get a call from a tow company, saying they found my car. When I get there, it is missing the interior, and trany only. They tell me it will cost about $2500 to get it out of impound, or they would keep the car (they were sitting on it for about 3 weeks to drive up the cost I am sure).
I told them I would be back with a check. I never returned. Lesson learned: Don't drive a Chevy... oh, and always have insurance.
I hope your luck is better than mine was.